Test None for an object that does not implement ==

[Steven D'Aprano]

On Mon, 26 Dec 2011 00:35:46 +1100, Chris Angelico wrote:

[...]
>> TypeError: Error when calling the metaclass bases
>>    type 'NoneType' is not an acceptable base type
> 
> Yes; unfortunately quite a few Python built-in classes can't be
> subclassed.


I can't think of any other un-subclassable classes other than NoneType. 
Which ones are you thinking of?



-- 
Steven